/**
 * Copyright (c) 2005-2012 springside.org.cn
 */
package com.thinkgem.jeesite.common.utils;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;

import javax.imageio.ImageIO;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.lang3.StringEscapeUtils;
import org.omg.CORBA.PRIVATE_MEMBER;

import com.sun.mail.imap.protocol.BASE64MailboxEncoder;
import com.thoughtworks.xstream.core.util.Base64Encoder;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

/**
 * 封装各种格式的编码解码工具类. 1.Commons-Codec的 hex/base64 编码 2.自制的base62 编码
 * 3.Commons-Lang的xml/html escape 4.JDK提供的URLEncoder
 * 
 * @author calvin
 * @version 2013-01-15
 */
public class Encodes {

	private static final String DEFAULT_URL_ENCODING = "UTF-8";
	private static final char[] BASE62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();

	static BASE64Encoder encoder = new BASE64Encoder();
	static BASE64Decoder decoder = new BASE64Decoder();

	/**
	 * Hex编码.
	 */
	public static String encodeHex(byte[] input) {
		return new String(Hex.encodeHex(input));
	}

	/**
	 * Hex解码.
	 */
	public static byte[] decodeHex(String input) {
		try {
			return Hex.decodeHex(input.toCharArray());
		} catch (DecoderException e) {
			throw Exceptions.unchecked(e);
		}
	}

	/**
	 * Base64编码.
	 */
	public static String encodeBase64(byte[] input) {
		return new String(Base64.encodeBase64(input));
	}

	/**
	 * Base64编码.
	 */
	public static String encodeBase64(String input) {
		try {
			return new String(Base64.encodeBase64(input.getBytes(DEFAULT_URL_ENCODING)));
		} catch (UnsupportedEncodingException e) {
			return "";
		}
	}

	// /**
	// * Base64编码, URL安全(将Base64中的URL非法字符'+'和'/'转为'-'和'_', 见RFC3548).
	// */
	// public static String encodeUrlSafeBase64(byte[] input) {
	// return Base64.encodeBase64URLSafe(input);
	// }

	/**
	 * Base64解码.
	 */
	public static byte[] decodeBase64(String input) {
		return Base64.decodeBase64(input.getBytes());
	}

	/**
	 * Base64解码.
	 */
	public static String decodeBase64String(String input) {
		try {
			return new String(Base64.decodeBase64(input.getBytes()), DEFAULT_URL_ENCODING);
		} catch (UnsupportedEncodingException e) {
			return "";
		}
	}

	/**
	 * Base62编码。
	 */
	public static String encodeBase62(byte[] input) {
		char[] chars = new char[input.length];
		for (int i = 0; i < input.length; i++) {
			chars[i] = BASE62[((input[i] & 0xFF) % BASE62.length)];
		}
		return new String(chars);
	}

	/**
	 * Html 转码.
	 */
	public static String escapeHtml(String html) {
		return StringEscapeUtils.escapeHtml4(html);
	}

	/**
	 * Html 解码.
	 */
	public static String unescapeHtml(String htmlEscaped) {
		return StringEscapeUtils.unescapeHtml4(htmlEscaped);
	}

	/**
	 * Xml 转码.
	 */
	public static String escapeXml(String xml) {
		return StringEscapeUtils.escapeXml10(xml);
	}

	/**
	 * Xml 解码.
	 */
	public static String unescapeXml(String xmlEscaped) {
		return StringEscapeUtils.unescapeXml(xmlEscaped);
	}

	/**
	 * URL 编码, Encode默认为UTF-8.
	 */
	public static String urlEncode(String part) {
		try {
			return URLEncoder.encode(part, DEFAULT_URL_ENCODING);
		} catch (UnsupportedEncodingException e) {
			throw Exceptions.unchecked(e);
		}
	}

	/**
	 * URL 解码, Encode默认为UTF-8.
	 */
	public static String urlDecode(String part) {

		try {
			return URLDecoder.decode(part, DEFAULT_URL_ENCODING);
		} catch (UnsupportedEncodingException e) {
			throw Exceptions.unchecked(e);
		}
	}

	
	//<img width="40" height="80" src="
	//HBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/2wBDAQkJCQwLDBgNDRgyIRwhMjIyMjIy
	/**
	 * 
	 * @Title: getImageBinary   
	 * @Description: 将图片转换成base64 
	 * @param: @param imagePath
	 * @param: @return      
	 * @return: String      
	 * @throws
	 */
	static String getImageBinary(String imagePath) {
		File file = new File(imagePath);
		if (!file.exists()) {
			System.out.println("文件不存在！");
			return null;
		}
		if (file.isDirectory()) {
			System.out.println("该路径是文件");
			return null;
		}
		BufferedImage bi;
		try {
			bi = ImageIO.read(file);
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			ImageIO.write(bi, "jpg", baos);
			byte[] bytes = baos.toByteArray();

			return encoder.encodeBuffer(bytes).trim();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return null;
	}

	/**
	 * 将Base64转换成图片
	 */
	@SuppressWarnings("restriction")
	static void base64StringToImage(String base64String,String imgPath,String imgSuffix) {
		try {
			byte[] bytes = decoder.decodeBuffer(base64String);
			ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
			BufferedImage bi1 = ImageIO.read(bais);
			File w2 = new File(imgPath);// 可以是jpg,png,gif格式
			ImageIO.write(bi1, imgSuffix, w2);// 不管输出什么格式图片，此处不需改动
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) {
		//System.out.println(getImageBinary("d://photo//1.png")); // 将图片转成base64编码
		//base64StringToImage(getImageBinary()); // 将base64的编码转成图片
		String str = Encodes.getImageBinary("c://1.png");
		FileUtils.createFile("c://2.png");
		Encodes.base64StringToImage(str,"c://2.png","png");
	}

}
